Vintage sterile 18cm Spanish Black OTF Aluminum frame and button automatic knife likely made in Spain in the 1970s or 80s. The knife measures 17.5cm (6 15/16 inches) open and 4 1/16 inches closed with aluminum frame & button. Similar knives are stamped INOX PAT 96750, but don't see any markings on this one. The flat spear blade is 100% full with original finish and some light scratches. The black synthetic scales (covers) have slight shrinkage and warping, but overall good. The knife works well with blade opening and locking when switch (button/knob) is pushed forward and retracts into the knife fully when it's moved backward. VG+ condition.